The fact is I can't sing most of these early folk ballads any more, because I've lost that high register. When I do sing them I have to take them down a few semitones. I'm much more comfortable singing songs by Steve Earle or Natalie Merchant or Ryan Adams, where I'm in a different zone. My voice is much lower these days, and I prefer it. There's also a lot less vibrato, because the ends of the vocal cords start to calcify. You do hear some people my age who shouldn't still be singing, where the vibrato is very wide and out of control and not very attractive. I try to avoid that!